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An aqueous acid solution conducts electricity, but the pure acid conducts poorly. What does this observation support?

Answer and explanation

Correct answer: Water is important for ion formation

The governing concept is ionisation in aqueous solution. Electric current in a solution is carried by mobile ions, not by neutral molecules alone. Water helps an acid ionise or dissociate to produce hydronium ions and corresponding anions; these charged particles move and conduct electricity. Therefore option A is correct. The observation contradicts the claim that acids never form ions, and colour or solid state does not explain the increased conductivity.

Related tags

Aqueous AcidIonisationElectrical ConductivityAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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